Perpettjax



G. G; GRUNEWALD AND M. SWEET.

PERPETUAL CALENDAR.

APPLICATION fll-ED IKN' 2l' T922.

Patented Aug. 22,1922.

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G. G. GRUNEWALD AIIIII III. SWEET.

PERPETUAL CALENDAR.

APPLICATION FILED IAN. 21. 1922.

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PER'PETUAL CALENDAR.

Specification of Letters Eatent.

Patented Aug. 22, 1922.

Application filed January 21, 1922.' Serial 110.530,83@

T 0 all wwmc't may concern.'

Be it known that Gnonsn GoLDsMrrr-r GnUNnwALn and MARY Swnnr, citizens of the United States of America, residing at Perrysville and at the village of Mifflin, respectively, in the countyof Ashland and State of Ohio, have invented certain new and useful mprovements 4in a Perpetual Calendar, of which the following` is a specification. y

This invention relates to an improvement in calendars of the perpetualxor continuous type, wherein through the manual adjustment of one or more parts arranged for such adjustment, the calendar may be set for any month of any year desired.

The improved calendar includes two movable elements or disks, one adjustable to set the calendar for the desired month, and the other adjustable to set the calendar for the desired year; the calendar also including certain fixed data, designed for cooperation with the data of the year disk and with the data of the month disk, in order to complete the reading relation of the calendar data as a whole when set for a particular month of a particular year.

The detailed arrangement is more particularly shown in the accompanying drawings, in which Fig. 1 is a face viewof the completed calendar.

venient access to the means for operating x,

the year and month disks. 1

A sheet 5 of appropriate material, as cardboard, is secured against movement within the frame, immediately below the glass covering the opening 2; This sheet, is provided with fixed data and will be hereinafter termed the fixed-data sheet and is formed immediately below its transverse median line with an opening (j, through which the data dications.

Atury toward the left being-headed by the neXt Asucceeding century number. The second cironthe year disk and on the month disk is visible as a determining aid in properly adiusting such disks.

Below the opening 6, the fixed-data sheet is provided, by printing orotherwise, with fixed year data, indicated generally at 7. This fixed year data consists of radial columns of circumferential rows of figures, arranged in the present instance to specifically represent the first two figures of a series of years, that is the century years in- For example, the column at the extreme right of Fig. y1 i's headed by the cennumber 15, the succeeding columns cumferential row beginnning at the column .immediately to the left of the 15 column begins with'the initial number of the final column, the remaining numbers of this row being consecutive, and so on throughout this particular data. Certain of these columns are printed in contrasting` colors, as in red, indicated by non-solid figures, and these columns are for centuries each ending with a leap year.

The data j ust described is for the so-called new style of -calendar reckoning7 and below this data 7, and preferably distinctively divided therefrom byl a division line 8, is a similar series of radial columns made up of rows of figures, all printed in the contrasting color, as each century under this style of reckoning ended with valeap year. rThis particular yearly data, indicated generally at 9, is for calendar reckoning for the years preceding the commencement of the present style, that is prior to October' 15, 1582. The particular arrangement of the data of this yearly style is clearly apparent from the drawings, the consecutive arrangement of the years being followed as in the present style of reckoning. y

'The `fiXedlata sheet 5, above the opening 6, is provided by printing or otherwise with vthe numbers l to 81, indicating the days of data 10,the fixed-data sheet is provided with an elongated curved aperture 11,` through "justn-ient of the calendar.

which the days of the week become visible in the adjustment ot the disks, as hereinafter explained.

A yearly disk 12 is mounted on a `central pivot 13, immediately below the tixed-data sheet. This yearly disk has a series ot numbers, indicated generally at 14n, arrangedin concentric rows and radial columns. These numbers are designed to present the tinal year-1igures 'of the centuries -for which the calendar is being adjusted, that is, with a particular number in this data alined radially with the column oi 4th`e"data 7 containing a particular number, the said two numbers represent a certain year in the calendar Vadjustment. 'For examjiile, with the column oi the data 1d on the year disk arranged in -ali'nement with any column ot the data 7 or' the fixed-data sheet, the century indication is complete -for any years indicated `by two numbers fot' one column and two num bers oli' the otherco'lumn. Thus 1922 would be indicated by alining the vcolumn of the data 14 containing 22 with the column of the data 7 containing l19.

The year `disk 'is also formed with sight openings 15, lar-ranged in Ia concentric series "and ladapted to be positioned in the opening 6 ot the fixed-data sheet 5 at each yearly yadv These `openings 15 constitute `openings through which cerv'tain data "on the month disk is visible. The

, year disk is also 'formed with a nari-mv openfing 1'6, concentric with but beyond the Yearl f data thereon this annular ouen- `ingregisteri'ng with the aperture 11 under `all conditions. Lably bridged by radial division bars 17 to The opening 11G is pretermaintain y"the integrity of the year disk, and alsovto provide clear lines ot ldivision bet'ween the' days ot the week, -i't beingl clearly apparent from the 4drawings that in any proper adjustii'ient of 'the year disk, the bars 17 align withthe vertical divisions o'f the data 10.

The month disk lis mounted on the pivot 13 yimmediately ybelow the year disk. 'ilhe ymonth disk has an annular series oit month indications, as lat '18, these lincluding the names ot the months, and 'also preferably a number corresponding to l'the munber ot' days in that lmonth. These month indica tions are -so arranged on the month disk 19,

ment of the year disk. The month disk has also 'a series ot'j'week-day indications-that isthe names of the `days ot lthe week-ns 'indicated 'at20. This data fis arranged be- 'yondthefmonthly data`18 and so spaced that the "adjustment r'ot the kmonth "disk, such data Will appear through the openings 11 'the other months ot the year.

and 16, and directly` above the monthlydata 10.

The year disk is preferably provided with an annular rim21 formed with notches 22, accessible in the spaces it at the rear ot' the trame, and the month disk has a similar rim or base 23, formed with iinger depressions 24, whereby either month or year disk may Abe rotated at will and ,accurately adjusted in accordance with the desired calendar indications.

It is believed that the operation of the parts in adjusting the calendar for a particular period, will be apparent from the `above description taken in connection with the drawings. It will be apparent that tollowing the adj ustment ot the year disk to set the parts for the particular year desired, as above described, an adjustment of the month disk may lbe hadv toA show the particular month.' The weekdays `and dates for that particular month in the desired year, are then correctly indicated on the calendar.

Aittention is called 'to the fac-t that the leap year iigures on yea-r disk is indicated in'red and are divisible by tour (t). 7When Yfinding leap year date tor example 19211,

the red figures 24: lare used for January and February only, while the similar black yfigures to the lett of the red column are for All other off the black ligures on vthe disk are v'for years 'other than leap years.

The nun'ibersbelow the disks are centuries or lett hand figures ot the dat-es. The figures to be indicated in red `are iigures otcenturies 'ending with by 400.v

The black figures being non-leap year centuries. l

-To s et thecalendar for any `date the upper disk is turned so that the y-fi,f ,ures willbe directly above lthe `century ligures below the disk. rllhis completes the year sought. Then turn the lower'disk till the month wanted appears vin Vthe opening of the upper disk; the day of the week will then appear above the date ot 'the permanent month showing 31 days lon the tace ot the calendar.

Attention vis further called to the tact that the calendar is mathematically accurate `land lreckons time from the year A. Il). '1 to 3299. it will Valso be apparent thatany ldateo'l: the week of any date within its reckoning vcan be-readi'ly Ifound of Va pastor `tut-ure date.

ln adjusting ythe calendar from vmonth `to month for continued luse `the lower disk is 'turnec'lguntil the succeeding month appears in the opening by turning the outer disk forward one year adjusted 'tor that year,

a leap year and are divisible Having thus described the invention,

what'lis claimed as new, is-

1. In a perpetual calendar, having aiXe data sheet with ,part year Aindications lthereon, said sheet also vbearing ysuccessive month dates and having openings formed therein in spaced apart relation to each other, a revolving disk havingan annular rim provided thereon and having endorsed thereon the remaining year indications, said disk also having spaced apart openings provided therein, avv second disk rfitted within the annular rim of the first disk and having notches formed on the rear portion therein to revolve it adjacent lto the year disk, said disk also having monthly indications endorsed-thereon and indications of the days of the weekarranged in association with the dates on the fixed data sheet as and 'for the purpose described. A

,5;1. ln a perpetual calendar', a fixed data sheet having part year indications endorsed thereon and separated to indicate the new style and old style calendar years, said fixed data sheet also having successive month dates endorsed thereon and also having spaced apart openings provided therein, a disk having the remaining year data indicated thereon and having a concentric series of openings formed therein, a month disk having monthly indications thereon and concentrically arranged indications of the days oit the weeks endorsed thereon and means to separately rotate the month disk and the year disk, to expose the data through the openings as and for the purpose described.

3. ln a perpetual calendar having a fixed data sheet with part year indications thereon arranged in radial columns, said part year indications indicating the old and new' style calendar and a year disk having columns representing` the remaining year indications, said year disk being adjustable to arrange the year indications in radial columns with either set ot the year indications of the fixed sheet. et. A perpetual calendar having a monthly disk and a fixed data sheet with part year indications thereon and arranged in radial columns, said part year indications indicating the old and new style calendar and a year disk having columns representing the remaining year indications, said year disk being adjustable to arrange the part year indications in radial columns with either set of the part year indications of the fixed sheet and openings provided in the fixed data sheet and the part yearly data sheet to expose to view the naines of the days o'j the week on the monthly disk alined with predetermined dates.

5. A perpetual calendar having a fixed. data sheet bearing part year indications, the dates of the month and having openings provided therein in spaced apart relation, a revolving disk mounted to revolve to expose certain data through the openings in the fixed data sheet, said revolving disk also having openings provided therein, a SeC ond revolving disk mounted to revolve in association with and independently of the first revolving disk and having data provided thereon that will be exposed to view through the openings provided in the first disk and fixed data sheet, both of said disks being journaled in a casing provided with openings in the rear portion thereof and having finger notches formed thereon to permit rotation of the disks relative to each other, for the purpose of exposing pre-determined data through said openings, to aline same with data on 'the fixed data sheet.

6. A; perpetual calendar having a fixed data sheet bearing part year indications, the dates of the month and having openings provided therein in spaced apart relation, a revolving disk mounted to revolve to expose certain data through the openings in the fixed data sheet, said revolving disk also having openings provided therein, a second revoluble disk mounted to revolve in association with and independently of the first revolving disk and having data provided thereon that will be exposed to view through the openings provided in the first disk, both of said disks being so arranged and associated together to indicate the day of the week of any particular date either prior to or subsequent to the instant date, and both of said disks being journaled in a casing provided with openings in the rear portion thereof and having finger notches formed thereon to permit rotation of the disks relative to each other, for the purpose of exposing pre-determined data through said openings,- to aline same with dataon the fixed data sheet.

7. In a perpetual calendar comprising a fixed data sheet having pre-determined data endorsed thereon and openings formed therein, two disks mounted in association with said fixed data sheet and adapted to be rotated independently of each other, one of said disks also being provided with openings and both of said disks being provided with pre-determined data, said pre-determined data being so arranged on the disks and fixed data sheet as to afiord means of indieating the name of the particular day of the week of a pre-determined date, either before' or after the instant date, both of said disks being journaled in a casing provided with openings in the rear portion thereof and having finger notches formed thereon to permit rotation of the disks relative to each other, for the purpose of exposing pre-determined data through said openings, to aline same with data on the xed data sheet, as and for the purpose described.

8. In a perpetual calendar, comprising a fixed data sheet having a series of openings formed therein and two independently revolving disks,vone of which is also provided with openings and having data endorsed on said fixed data sheet and revolvingdisks, whereby upon the actuation of the disks with relation to the data on theiixed disk, the data on all elements can be arranged With relzation.l to leach other to indicate the `naine ot the day ofthe Week of a certain date, both of said disks being journaled in a casing provided with openings in the rear portion thereof and having linger notches formed thereon to permit rotation of the disks relative to each othentor the purpose fof exposing pre-determined data through .said openings, to aline saine with data on the ixed data sheet, as and 'for the purpose described. l

9. perpetual Calendar having a lined data sheet bearing part-year indications, a year disk adjustable relative to such sheet and bearing the remainder' of the year indications, the association oli theyear indications on said sheet and year disk determining the position of the year disk, and a nionth disk having month-dataadapted for adjustment to disclose monthly data through an opening in the adjusted year disk.l

10. A perpetual calendar having a lixed- I GEORGE GOLDSMITH GRUNEWALR i MARY SWEET. v 

